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Old 08-19-2010, 09:08 AM   #1
suprstar
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HUGE load, no apparent activity


I have a firewall / proxy that has an extremely high load, but I can't figure out what's using it. No real cpu usage, the disks are sleeping except for a little log activity, it's on gigabit ethernet and not close to maxing out... Command link stuff runs fast, nothing seems slow, yet the load is sky-high. IME this kind of load is associated with a lot of disk I/O, but that's not the case here.

What could be causing this, what else factors into the load?

uname -a:
Code:
Linux myfirewall.mydomain.com 2.6.8 #1 SMP Mon Oct 18 11:20:22 CDT 2004 i686 i686 i386 GNU/Linux
top:
Code:
07:55:43 up 1503 days, 17:13,  5 users,  load average: 26.50, 26.33, 26.25
Tasks: 245 total,   2 running, 243 sleeping,   0 stopped,   0 zombie
Cpu(s):  0.6% us,  1.1% sy,  0.0% ni, 95.0% id,  2.7% wa,  0.2% hi,  0.5% si
Mem:   3895508k total,  3582272k used,   313236k free,   207468k buffers
Swap:  2040244k total,   112664k used,  1927580k free,  1358744k cached
 
Old 08-19-2010, 09:57 AM   #2
syg00
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Try this and see what you get
Code:
top -b -n 1 | awk '{if (NR <=7) print; else if ($8 == "D") {print; count++} } END {print "Total status D: "count}'
 
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Old 08-19-2010, 01:24 PM   #3
suprstar
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Lots of dead processes.... Why does that increase load?
 
Old 08-19-2010, 07:43 PM   #4
syg00
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They ain't dead. "man proc", and look at the definition of loadavg.

Just went and looked (again) myself - that definition is slightly misleading. State "D" is uninterruptible sleep - usually waiting for disk I/O. Can also indicate misbehaving software.

Last edited by syg00; 08-19-2010 at 08:46 PM.
 
Old 08-20-2010, 07:49 AM   #5
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Thanks a ton, killing those off fixed me up!
 
  


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